Peanut Butter Marshmallow Squares / Confetti Bars

No Bake Peanut Butter Marshmallow Squares are an old fashioned favourite! You can adjust the marshmallows amount to your personal liking in these.

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No Bake Peanut Butter Marshmallow Squares / Confetti Bars are from my repertoire of my Grandma Marion’s recipes,  as she was an avid fan of  “dainties”.

Stack of Peanut Butter Marshmallow Squares / Confetti Bars in ruffle plate

Marshmallow Bars

These are also squares, as most people would call them, but I prefer the word dainties instead, not only because it brings forth very fond memories of my grandma who has sadly no longer with us, but because it also evokes a feeling of times gone by, in which you always had a supply of dainties ready in the freezer in case your neighbor stopped by. Having treats ready for company at any time was really common in my grandma’s rural area;  if you stopped by, there would be a cup of coffee and a plate of squares produced for your chat in less than 10 minutes.

Close up stack of No Bake Peanut Butter Marshmallow Squares in a ruffle plate

Oh colored marshmallows, how I love thee. Especially the large ones roasted over a campfire, which reminds me, those large colored marshmallows are darn hard to find! This recipe uses just over half of a large bag of the mini variety rainbow marshmallows. When then leaves just under half a bag of colored mini-marshmallows for snackin’. Gotta love a recipe that pulls double duty!

No Bake Peanut Butter Colored Marshmallow Squares on jade blue background

No bake peanut butter marshmallow squares are probably my favourite square on earth and they totally made it into my cookbook even! Now, the cookbook has a NEW version of these bars as well that you will totally have to check out as well.

Those are super deadly and delicious as well! For now though, this recipe is still a winner and my favourite.

Close up stack of No Bake Peanut Butter Marshmallow Squares in a ruffle plate

The really important question is: are you a butterscotch or chocolate lover when it comes to these bars? You can make both versions easily,my Grandma always had both but I do believe that these butterscotch ones disappeared faster than the chocolate ones did.

And if you can believe it, these are even BETTER when they are frozen!

Happy baking everyone!



Peanut Butter Marshmallow Squares / Confetti Bars

No Bake Peanut Butter Marshmallow Squares are an old fashioned favourite! You can adjust the marshmallows amount to your personal liking in these.
4.97 from 31 votes
Close up stack of No Bake Peanut Butter Marshmallow Squares in a ruffle plate
Prep Time
5 minutes
Cook Time
5 minutes
Total Time
10 minutes
Karlynn Johnston


  • 1/2 cup butter
  • 1 cup peanut butter you can use crunchy if it’s your favourite!
  • 1 package butterscotch chips or chocolate chips
  • 1/2 teaspoon vanilla
  • 6-8 cups coloured marshmallows


  • Line a 9×13 pan with parchment paper and set aside.
  • Place the butter, peanut butter and baking chips into a large saucepan. Heat over low-medium heat until melted and smooth, stirring frequently.
  • Remove from the heat and stir in the vanilla.
  • Cool until you can safely touch the bottom of the pot, then stir in the marshmallows.
  • Spread out evenly in the prepared pan. Cool completely and let set, then slice and serve.
  • These freeze well and even taste better frozen!

Recipe Video

Recipe Notes

Nutritional values may vary depending on brands of ingredients used.

Nutrition Information

Serving: 1bar, Calories: 120kcal, Carbohydrates: 12g, Protein: 2g, Fat: 7g, Saturated Fat: 2g, Cholesterol: 8mg, Sodium: 77mg, Potassium: 55mg, Sugar: 8g, Vitamin A: 95IU, Calcium: 5mg, Iron: 0.2mg

All calories and info are based on a third party calculator and are only an estimate. Actual nutritional info will vary with brands used, your measuring methods, portion sizes and more.

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No Bake Peanut Butter Marshmallow Squares are an old fashioned favourite!

Karlynn Johnston

I’m a busy mom of two, wife & cookbook author who loves creating fast, fresh meals for my little family on the Canadian prairies. Karlynn Facts: I'm allergic to broccoli. I've never met a cocktail that I didn't like. I would rather burn down my house than clean it. Most of all, I love helping YOU get dinner ready because there's nothing more important than connecting with our loved ones around the dinner table!

Learn more about me

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Reader Interactions

Comments & Recipe Tips Share a tip or comment!

  1. Kristin from Grande Prairie says

    Everyone LOVES your Peanut Butter Marshmallow Squares Recipe. I make it every year for Christmas with the Butterscotch chips and for Birthdays with the chocolate chips. Classic squares that disappear! Great for lunches too. Sure to make the other kids, and adults, jelly.5 stars

  2. Paul Fleckenstein says

    The only colored marshmallows I can find are fruit-flavored. Is that what you use?

  3. Heather Ehrenholz says

    For some reason the first (and second) time I made these they worked out perfectly – but I’ve tried doing a third and fourth and my peanut butter seems to form more into “peanut butter consistency” once I’ve tried heating it up with the chips and butter..? So when I go to spread it with the marshmallows the peanut butter is really really thick instead of more “watery”… any ideas? Am I not heating it long enough? Help!

  4. Shirlene says

    Excellent recipe. I used 200 grams of butterscotch chips and 100 grams of peanut butter chips. They are delicious. Not as sweet as the original.

  5. Jennifer says

    These were pure gold at our small town Harvest Festival dinner and carnival tonight. I made both versions from the cookbook and the butterscotch ones were the winner. I also added quite a bit of rice krispies which were lovely. Those rainbow marshmallows are so fun!5 stars

  6. Diane Fox says

    What is the weight of your bag of chips please.?

  7. Rose Kalin says

    Can I use salt carmel chips instead of butterscotch chips? Can’t find any butterscotch chips.

  8. Kristie Williams says

    Can I use peanut butter chips in place of butterscotch? Theres no butterscotch in the province!! 😭

  9. Margo Stretch says

    So I made (tried to make) the Nutella version of these from the cookbook; so far, big fail. They will not stir together. It seems there are way too many marshmallows; the mixture is thick and will not coat the marshmallows and nuts. I pkg marshmallows was 5 cups, so I measured 8 cups from two packages, exactly 8 cups. I see a similar question asked here regarding the PB ones, so although I’d love to try them again, because I really want to have success, I won’t until I know what happened.

    • Dawn Lehman says

      My grandmother made these in the summer when we’d go out to the farm and I tried to follow her recipe and had the same results you’ve had. I asked her about it and she reminded me that the recipe for treats like these are a guideline. Then she’d tell me to follow my heart and adjust the recipes as needed. Needless to say, I follow her old homespun wisdom to this day and start with the lowest amount listed and add more if needed. It’s something I do with all her recipes and she’s been gone 30 years now but I remember her cooking to this day. She said they weren’t raised to use words to show their love but their actions were proof positive5 stars

  10. Esther says

    I adore these! I use extra crunchy peanut butter and add Heath Toffee bits and some Maldon salt flakes as a finish. Addicting.5 stars

  11. sharon cunningham says

    Have not tasted yet – but I think I would prefer less marshmallows – it would be helpful to put the quantity of butterscotch chips – I pkg does not mean the same in all areas – I used a pkg that was 2 cups . thanks

  12. Bob says

    Hi there, these are actually of Canadian origin, whereas the recipe lists them as American. Since you pay quite close attention to classic desserts from the prairies, have you found another source staying otherwise? Everything I’ve seen suggests these are indeed a Canadian classic.

  13. Dianne Fitzmaurice says

    Is there something to substitute for the butterscotch chips? They were all out at 2 stores . Would brown sugar work ?

  14. Sandra says

    Can you add chopped pecans to this to give it a crunch?

  15. Elaine Cameron says

    Can I use dry pudding butterscotch if I don’t have butterscotch chips

  16. Suzanne McKay says

    Instead of spreading in a pan to make squares, I plan to divide into rolls in wax paper then cutting slices for smaller pieces for those who like to sample a bit of everything.5 stars

  17. Kelly says

    I have a lot of peanut butter on the bottom – is there a trick for having spread more evenly through the marshmallows?4 stars

    • Barbara Larson says

      Let the mixture cool longer before adding marshmallows

  18. Mary Ann says

    Could you add some Rice Krispies for a little crunch?

  19. Nancy Magliery says

    Can something be substituted for the butter? Looking to make something for a lactose intolerant child.

    • Michelle Boyle says

      I saw someone make a version of these with coconut oil instead of butter.

    • Melanie says

      There’s next to no lactose in butter, I just found out after years of substituting….

    • Tiffany says

      we have a severe dairy allergy in the family so I used becel vegan “butter” and it worked just fine

  20. Issi says

    These are my reason for living. They’ve gotten me through some hard times.

  21. Marcy Bos says

    Reminds me of my mom’s Tupperware parties. ❤

  22. Corene Hawley says

    Always a hit. The first recipe i made from your cookbook.

  23. Kristina Craig says

    I make these with Sunbutter instead of peanut butter so my daughter can have them too!

  24. Dana Maxine Yandt says

    Those always gave me insomnia. I had to wake up 2 or 3 times in the night to nibble on a piece.

  25. Lorraine @ Not Quite Nigella says

    They look absolutely delicious and colourful too! 🙂

    • Jeannine says

      Just use crunchy peanut butter. Delicious! …but pecans would be delicious too.😄

  26. Charlynn says

    I love these bars.  My grandmother always made them with butterscotch chips for me for my birthday.  

4.97 from 31 votes (24 ratings without comment)

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